GB0105975D0 - A method of modifying low frequency components of a digital audio signal - Google Patents

A method of modifying low frequency components of a digital audio signal

Info

Publication number
GB0105975D0
GB0105975D0 GBGB0105975.7A GB0105975A GB0105975D0 GB 0105975 D0 GB0105975 D0 GB 0105975D0 GB 0105975 A GB0105975 A GB 0105975A GB 0105975 D0 GB0105975 D0 GB 0105975D0
Authority
GB
United Kingdom
Prior art keywords
audio signal
low frequency
digital audio
frequency components
modifying low
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
GBGB0105975.7A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Central Research Laboratories Ltd
Original Assignee
Central Research Laboratories Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Central Research Laboratories Ltd filed Critical Central Research Laboratories Ltd
Priority to GBGB0105975.7A priority Critical patent/GB0105975D0/en
Publication of GB0105975D0 publication Critical patent/GB0105975D0/en
Priority to EP02702543A priority patent/EP1374632A2/en
Priority to PCT/GB2002/000987 priority patent/WO2002074013A2/en
Priority to GB0320788A priority patent/GB2390280A/en
Priority to US10/659,049 priority patent/US7233833B2/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/005—Combinations of two or more types of control, e.g. gain control and tone control of digital or coded signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/007—Two-channel systems in which the audio signals are in digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Stereophonic System (AREA)
GBGB0105975.7A 2001-03-10 2001-03-10 A method of modifying low frequency components of a digital audio signal Ceased GB0105975D0 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GBGB0105975.7A GB0105975D0 (en) 2001-03-10 2001-03-10 A method of modifying low frequency components of a digital audio signal
EP02702543A EP1374632A2 (en) 2001-03-10 2002-03-06 A method of modifying low frequency components of a digital audio signal
PCT/GB2002/000987 WO2002074013A2 (en) 2001-03-10 2002-03-06 A method of modifying low frequency components of a digital audio signal
GB0320788A GB2390280A (en) 2001-03-10 2002-03-06 A method of modifying low frequency components of a digital audio signal
US10/659,049 US7233833B2 (en) 2001-03-10 2003-09-10 Method of modifying low frequency components of a digital audio signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0105975.7A GB0105975D0 (en) 2001-03-10 2001-03-10 A method of modifying low frequency components of a digital audio signal

Publications (1)

Publication Number Publication Date
GB0105975D0 true GB0105975D0 (en) 2001-04-25

Family

ID=9910429

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0105975.7A Ceased GB0105975D0 (en) 2001-03-10 2001-03-10 A method of modifying low frequency components of a digital audio signal
GB0320788A Withdrawn GB2390280A (en) 2001-03-10 2002-03-06 A method of modifying low frequency components of a digital audio signal

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB0320788A Withdrawn GB2390280A (en) 2001-03-10 2002-03-06 A method of modifying low frequency components of a digital audio signal

Country Status (4)

Country Link
US (1) US7233833B2 (en)
EP (1) EP1374632A2 (en)
GB (2) GB0105975D0 (en)
WO (1) WO2002074013A2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ532572A (en) * 2004-04-26 2006-10-27 Phitek Systems Ltd Audio signal processing for generating apparent bass through harmonics
CN101326853B (en) * 2005-12-13 2011-11-23 Nxp股份有限公司 Device for and method of processing an audio data stream
US9380385B1 (en) 2008-11-14 2016-06-28 That Corporation Compressor based dynamic bass enhancement with EQ
GB0906594D0 (en) 2009-04-17 2009-05-27 Sontia Logic Ltd Processing an audio singnal
CN102771145A (en) * 2010-01-07 2012-11-07 塔特公司 Compressor based dynamic bass enhancement with EQ
JP5707963B2 (en) * 2011-01-20 2015-04-30 ヤマハ株式会社 Audio amplifier
US9398391B2 (en) * 2012-05-29 2016-07-19 Creative Technology Ltd Stereo widening over arbitrarily-configured loudspeakers
JP5830628B2 (en) 2013-07-08 2015-12-09 オリンパス株式会社 Introduction device
EP3453187B1 (en) 2016-05-25 2020-05-13 Huawei Technologies Co., Ltd. Audio signal processing stage, audio signal processing apparatus and audio signal processing method
KR102441950B1 (en) * 2017-08-11 2022-09-08 삼성전자 주식회사 Method for amplifying audio signal based on size of the audio signal and electronic device implementing the same
US10896663B2 (en) * 2019-03-22 2021-01-19 Mixed In Key Llc Lane and rhythm-based melody generation system
CN113661538A (en) 2019-04-12 2021-11-16 华为技术有限公司 Apparatus and method for obtaining a first order ambisonic signal
CN116546416B (en) * 2023-07-07 2023-09-01 深圳福德源数码科技有限公司 Audio processing method and system for simulating three-dimensional surround sound effect through two channels

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4602381A (en) * 1985-01-04 1986-07-22 Cbs Inc. Adaptive expanders for FM stereophonic broadcasting system utilizing companding of difference signal
DK168681B1 (en) * 1992-03-02 1994-05-16 Bang & Olufsen As Speaker with means for frequency dependent amplitude control
WO1993019525A1 (en) * 1992-03-23 1993-09-30 Euphonix, Inc. Visual dynamics management for audio instrument
DE69227681T2 (en) * 1992-07-31 1999-06-10 Aphex Systems Ltd Arrangement for raising the bass frequency of an audio signal
US6606388B1 (en) * 2000-02-17 2003-08-12 Arboretum Systems, Inc. Method and system for enhancing audio signals

Also Published As

Publication number Publication date
US20040114769A1 (en) 2004-06-17
WO2002074013A3 (en) 2003-10-30
US7233833B2 (en) 2007-06-19
EP1374632A2 (en) 2004-01-02
GB2390280A (en) 2003-12-31
WO2002074013A2 (en) 2002-09-19
GB0320788D0 (en) 2003-10-08

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)